Asts.java

/**
 * Copyright (c) 2015 Codetrails GmbH.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Marcel Bruch - initial API and implementation.
 */
package org.eclipse.recommenders.completion.rcp.utils;

import static com.google.common.base.Throwables.propagate;

import java.lang.reflect.Field;

import org.eclipse.jdt.internal.ui.javaeditor.ASTProvider;
import org.eclipse.recommenders.utils.Reflections;

@SuppressWarnings("restriction")
public final class Asts {

    private static final Field SHARED_AST_LEVEL = Reflections
            .getDeclaredField(true, ASTProvider.class, "SHARED_AST_LEVEL") //$NON-NLS-1$
            .orNull();

    private Asts() {
        // Not meant to be instantiated
    }

    public static int getSharedAstLevel() {
        try {
            return (Integer) SHARED_AST_LEVEL.get(null);
        } catch (Exception e) {
            throw propagate(e);
        }
    }
}